Fire-box.



C. DUCAS.

FIRE BOX.

APPLICATION FILED APR. 24. i914.

Patented May2, 1916.

4 SHEETS-SHEET I.

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FIRE Box.

APPLICATION FILED APR.24,19I4. www

Patented May 2, 1916.

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FIRE BOX. APPLICATION m51) Amm, 19:.

Putenad May 2, 1916.

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C. DUCAS.

FIRE-BOX.

APPLICATION FILED APR.24.1914.

Patented Muy 2, 1916.

4 SHEETS-SHEET 4.

witnesses.

5. a w r 0s te n/ er va mi@ r e n/ Attorney` l FNEQ.

CHARLES DUCS, OIF NEW YORK, N.' .SSIGNOR TO J ACOBS-SHUPERT UNITED STATES MIRE-BOX COMPANY, 0F YORK, N. Y., A CORPORATION OF PENNSYLVANIA.

meson.'

in the State of New York, have invented 'al certain new and useful Improvement in Fire-Boxes, and do hereby declare that the following is a full, clear, and eXact descrip tion thereof.

My invention relates particularly to loco` motive lire-boxes and especially locomotive fire-boxes adapted toutilize `tubes for the;

transference of heat to the water around the fire-box." v

The object of my invention is to provide a fire-box equipped with water-tubes, which is so arranged that 'the expansion and contraction of the various parts will not loosen the tubes in their sockets; In order to carry out this portion of my invention the tubes are preferably curved at least in part whereas the ends of the tubes are connected to portions of the fire-box which are rigidly supported in a pedestal-like manner at'the front and rear of the fire-box'v by substantially vertical plates.

Another object of my invention is to provide a. ire-box, and especially a fire-box of the above type, which is so arranged that a man can readily enter the interior of the water/space so as to inspect, clean lor wash the interior, or to make repairs either to the tubes or other portions of the crown and roof sheets and the staying means attached thereto without the necessity of disconnecting any of the parts other than the man* hole covers provided for this purpose.

A' further object of my invention is to provide a tire-box with tubes so arranged'that they effectively confine the flames and heated gases within the Iire-box so as t secure a maximum of heating surface'and of transl ference of the heat to the water.

A further object vof my invention is to provide an advantageous strengthening means for the portions of the sheets through .which the ends of the tubes pass, so as to compensate for'the removal of the material from the sheet to permit the entry of the ends of the tubes.

A still further object of my invention is to provide an advantageous strengthening means for the back-head,`.which contains openings or doors to allow the entrance of workmen to the interior of the fire-box.'

Another object oflmy invention is to arrange the parts in such a"` manner that 'the -Speeication of Letters Patent.

l so affected.

Patented May 2, 19216.

'lapipuoatioa mea sp1-i1 e4, i914. seriai No. seance.

' main portions of the tubeslocated at the,

bottom of the fire-box may be made vertical while the throatvsheet at the forward endof the fire-box may be neverthelesslocated in an inclined position.

Still another object of my inventionis to provide a form of construction immune from disastrous explosion due to low water conditions, by making the roof and crown sheets of transverse sections and hence conlining any rupture to the' particular section While my invention is capable of embodiment in many different forms, for the purposes of illustration I have shown only vone form' thereof in the ings, in which,

ldigure` 1 is a perspective View partly in sectlon of a portion of a fire-boxA made in accordance with my invention; Fig. 2 is a lon,. ;'itudinal vertical section of the same;

Fig. B is anend elevation partly in section of the same; Flg. 4 is a perspective view of v one of the forwardfc'orners of the fire-box; 4Fig. 5 1s a perspective View of one of the' rear corners of the're-box; and Fig. 6 is an enlarged detail of the plates through which the upper ends of thetubes pass, showing the strengthening means at this point.

In the drawings I have shown a roof sheet made up of a plurality of U-shaped'J sections l, havingoutw-ardly directed angesl 2, which are riveted together. The foremost one of these Ushaped sections l isv riveted in accompanying drawa vsimilar manner to a throat sheet 3, which 1n turn is riveted to a boiler sheet 3. e-

lto receive ire-tubes 9. The crown sheet is preferably arched to a slight degree in order to closely conform to the location ofthe firetubes y9, and the roof sheet. is peferably arched so as to be parallel to t e crown sheet. Between the throat sheet 8 and the Hue sheet 8 there area number of stays 10. At the rear of the fire-box Athe U-shaped;sec tion 7 at that point is riveted to a. door sheet 'the ,vided with the openings to receive the water thefiy --box so that as p furthermore to 11 and the U-shaped section l, which is lo` cated at the rear end of the roof sheet is riveted to a back-head- 12. Between'the door sheet 11 and the back-head 12 there are also provided a number of stays 13 and outwardly and inwardly directed flanges 11 and 15 are provided on the door sheet 11 and the back-head 12, respectively, which are riveted together so as 'to form the'door opening. The back-head 12 has at either theirv upper edges with the U-shaped sections 1 and at their lower edges with the U- shaped sections 7. The connecting sheets 21 are connected at their rear ends with the semi-circular extensions 16 on the back-head and at the front ends with the throat sheet 3. At each side of the fire-box aseries of "watentubes 22 are ends sn'aged provided having their down and welded 1n holes passing through the connecting sheets 21. As

' A, shown particularly in Fig. 6 the portions of j the connecting sheets 21 in which the openings for the tubes are located, are strengthenedby extendingr 'the vends of the U-shaped vplates 7 along the underfaces of the connecting sheets 21 so as to cover and pass beyond portions ot the connecting sheets 21 protubes. It will be noted that the ends of the U-shaped sections 7 are then riveted to the connecting sheets'21 beyond the positions ot' the openings` provided for 'the water-tubes. While the water-tubes 22 are smaller in diameter at their ends, the Water-tubes are ot' such a width and are so located as to he *closely adjacent to one another throughout! their length. The construction isfso arranged that the-flue sheet R and throat sheet 3 act as a supportingY column at the trout of the fire-box and the door sheet -11 and lack-head 12 act as there is a rigid andl permarent positioning ofthe parts shocks from the fire-box supports ou the frame will not atl'ect any ot' the yjoints -ot the dliercntportions of the tile-box. ln

order to lpreserve this arrangement and so.v as not to make the support of the various parts depend upon the Water-tubes, and 'so arrange the unter-tubes to permit independent expansion and contraction thereoi Without loosen ing; thejoint's between their ends and the partso't the .fir box to which they are coni'lected. the Water U-shaped a 'column at the rear ot by this. f

vmeans. the nioranents otwhich by differences in eXp-unwon and contraction or by the ivato-r chamber pansion and the contraction of the Watertubes as compared With the columns pre-. viously referred to as supporting the front and rear of the lire-box. At the bottom of the re-box there is a mud ring 23 which eX- tends around the bottom of the fire-box andwhich is located at the rear of the fire-box between the door sheet 1l and the back-head 12,and at the front of the fire-box between the throat sheet 3 and the flue sheet 8, suitable rivets being passed through the mud ring and the various sheets to which it lis attached to holdthe Same in place. At the sides of the fire-box inverted U-shapedl sections 24 are located over the mud ring, said U-shaped sections 24 having annular 25 to Which the lower ends of the tubes 22 are secured. The lower ends of the tubes 22 are swaged downto a smaller diameter so-as to fit within the annular flanges.

As will be seen in Fig. 5 at the rear corners'of the mud ring 23'the U-shaped seetions 24 vat ythe sides of the lire-box are welded to corner U-shaped sections 26,Which in turn are Welded to short end U-shaped sections 2'? located :'unrnediatelyy adjacent to the back-head 12. Screw plugs 28 permit the entry of tools for clearing the circulation spaces formed by the inverted U-shaped sectionsQtn At the front of the fire-box in order to permit the 'main portions of 'the .tubes 22 to be straight notwithstanding the inclined. position of the throat sheet 8, the

sides of the mud ring 23 are extended for' Wardly a short distance beyond the lower end ofthe throat sheet 8 and the inverted plates24 are extended forwardly in a similar manner to cover the sides of Ythe mud ring 23 upto their extreme ends.

The inverted U-shaped plates 2,4 also have screw plufs 29 to permit the entry of tools in the Water spaces therein. At the top of the tire-box the baclvhead 12 has upon its inner tace a reinforcing' plate 30 made somewhat in the form of a iigure 8, the openings in which register with the man-holes 1T. The reinforcing plate 30 has a pair of transverse ribs 31 to strengthen the back-head Aat thispoint and make thesalne as strong as it' the man-holes 17 had not been formed in the bacl -l1ead- `Brackets extending; over and `boltcd'to thelanges 31 connect the fiangesby means oi longitudinal stays 33 with the throat sheet 3 and with the boiler sheet 3". 4

`JY/'hen a rebox isconstructed as indicated abovc. thc top are supported by the front pedestal formed bythe fine sheetrS., and the throat sheet i flanges Stand the rear pedestal'` formed h v the dof'irgsheet 11, and th'efhack-l loo and `bottom -portions ot' y door sheet and fluen sheet7 and water-tubes connected to the water chamber located at the sides of the fire-box, and a back-head having man-holes giving access to the spaces in the connecting sheets.

, 6. A tire-boxv comprising a door sheet, a'

' 15 spaces in the connecting sheets.

-7. A fire-box comprising a door sheet, a flue sheet, a water chamber comprising a crownsheet, a roof sheet and lateral semi cylindrical connecting sheets the water chamber being connected to the tops of the vdoor sheet and flue sheet, water-tubes conl nected to the water chamber and located at the sidesof the fire-box, staying means between the crown and roof sheets allowing longitudinal passageways in .the connecting sheets, Vand a back-head having man-holes Y. giving access to the spaces in the connecting sheets. -1 A 8. A fire-box-comprising a door sheet, a 30. flue sheet, a water chamber comprising a crown sheet, a roofsheet and lateral'semicylindrical connecting sheets, the water 'chamber being connected to the tops of the door sheet and flue sheet, vertical wat-crtubesconnecte'd to the water chamber and l0- cated at the sides of the fire-box, staying means between the crown and roof sheets allowing Alongitudinal passageways in the connecting sheets, and a. bach-head having man-holes giving access to the spaces in the connecting sheets.

9.A A. fire-box comprising a door sheet, a

flue sheet, a water chamber comprising crown. sheet, a roof sheet and lateralv semis C vlindrical connecting sheets the water ciia'mber being connected to the tops of the vdoor sheet and fine sheet, water-tubes connected to the water chamber and located at the sides of the fire-box7 staying means be- 90 'tween the crown and roof sheets allowing longitudinal passageways in theconnecting sheets, and aT-shaped back-head having man-holes giving access to the spaces in the connecting sheets. p

10. `A fire-box comprising al door sheet, a fine sheet, a water chamber comprising a crown sheet, aroof sheet and lateral semicylindrical connecting sheets' the water chamber being connected to the tops of the 'Go'doorsheet and flue sheet, vertical watertnbes connected to the water chamber and l0- lcated at the sides of the fire-box, staying means between the crown and roof sheets r allowing longitudinal passagcways in the C9 connecting sheets, and a T-sha pcd back-head having man-holes giving access to thespaces in the connecting sheets.

11. A lire-box having a -water chamber,4 comprising a crown sheet, a roof sheet and semi-cylindrical connecting sheets connect 70 ing the sides thereof, and water tubes conv nected to the water chamber and located at v the sides thereof.

12. A fire-box having a water-chamber, comprising 'a crown sheet, a roof sheet and 75 semi-cylindrical connecting sheets connecting tie sides thereof tangent to the crown .and roof sheets, and water tubes connected 4to the water chamber and located at the sides thereof.

i 13. A lire-box comprising a sectional' crown sheet, a sectional roof sheet, semicylindrical connecting sheets connecting the sides thereof and staying means connecting 'the sections o the crown and roof sheets 85 but leaving open the spaces inthe connecting sheets. 1

lsl. A lire-box comprising a sectional crown sheet, a sectional roof sheet, semicylindrical connecting sheets connecting the 9o sides'thereof tangent to the crown and roof sheets, and staying means connecting the sections of the crown and roof sheets but leaving` open the spaces in the connecting sheets.

l5. A fire-box comprising a door sheet, a fine sheet, a water chamber comprising a' crownsheet, a roof sheet and lateral, semicylindrical connecting sheets, the Water chamber being connected to the tops of the door sheet and lne sheet and` curved watertnbesconnected to the water chamber and located at the sides of the hre-box.

16. A fire-boxcemprising a door Sheet, a fine sheet, a water chamber comprising a` crown sheet, a roof sheet and lateral, semicylindrical connecting sheets, the Water chamber being connected't'o the tops of the door sheet and flue sheet and water tubes having redncedends connected to the witter hamber and located at the sides ofthe iireox.

17. A fire-box comprising a door sheet, a flue sheet, aWater chamber connected to the tops of 'the door sheet and flue sheet, vertical water-tubes connected to the Water chamber'located at the sides of the fire-box, a mnd ring,`and an inverted U-shaped plate. connecting the mud ring tothe Water-tubes.

18. A fire-box comprising a. door sheet, a

`flue sheet, a waterchamber comprising a crown sheet, a roof shee'tandlateral connecting sheets the Water chamber being connected to the tops ofthe door sheet and'flue sheet, vertical water-tubes connected to the water chamber located at the ysides Voff-the 125 fire-box, a mud ring, andan inverted U- shapedplate connecting the Qmud ring to the water-tubes. V 'l 19. A fire-box comprising a'door sheet, a

flue sheet,`a water Vchamber `comprising a 13"- .icrown sheet, a roof sheet and lateral lsemicylindrical Connecting sheets the Water chamber sing connected to the tops of the door sheet and flue sheet, water-tubes connected to the water chamber located at the sides of the tire-box, a back-head having man-holes giving access to the spaces in the connecting sheets, a mud ring, and an inverted U-shaped plate connecting the mud ring to the water-tubes. v

E20. A lire-box comprising a door sheet, a flue sheet, a water chamber' comprising a crown sheet, a roof sheet and lateral semicylindrical connecting sheets the Water lchamber being connected 'to the tops of the door sheet and flue sheet, vertical Watertnbes lconnected to the water Ichamber located at the sides of the fire-box, a, backn head having man-holes giving access to the spaces in the connecting sheets, a mud ring, and an inverted U-shaped plate connecting the mud ring to the water-tubes.

2l. A lire-box comprising a door sheet, a iiue sheet, a water chamber comprising a crown sheet, a roof sheet and lateral semicylindrical connecting sheets the water chamber beingconnected to the tops of the door shectand fine sheet, water-tubes connected to the Water chamber and located at the sides oft' the irebox, staying means between the crown and root sheets allowing longitudinal passageways in the connecting sheets, a back-head having man-holes giving access to the spaces in the connecting sheets, a mud ring, and an inverted tl-shaped plate connecting the mud ring to the water-tubes.

22, A tire-box comprising a door sheet, a

'flue sheet, a water chamber .comprising a crown sheet, a roof sheet and lateral semicylindrical connecting sheets the water chamber being' connected to the tops of the door sheet and fine sheet, vertical watertubes connected to the water chamber and located at the sides of the hre-box, staying a i ieans between the crown and rooie sheets allowing,A longitudinal passagcways in the connecting sheets, a back-head having manholes giving access to the spaces in the connectingsheets, a mud ring and an inverted eJ-sbaped plate connecting.; the mud ring 'to the water-tubes.

23. A fire-box comprising a door sheet, a fine sheet, a water chambercomprising a crown sheet, a roof sheet and lateral connecting' sheets the water chamber being' connected to the tops of the door sheet and Yflue sheet, and water-trllics connected to the water chamber and located at the sides ot'the tirebox. the crown sheet and connecting sheets overlapping to receive the ends of the watertubc-s.

A ire-box comprising a door sheet, a lne sheet, a water chamber comprising a crown sheet, a roof sheet land lateral con nectingsheets the water chamber being connected to the tops of the door sheet and flue sheet and vertical water-tubes connected to the water chamber and located at the sides of the fire-box, the crown sheet and connecting sheets overlapping to receive the ends of the water-tubes.

A fire-box comprising a door sheet, a line sheet, a water chamber connected to the tops of the door sheet and flue sheet, watcrtubes connected to the water chamber, located at the sides of the lire-box, a mud ring, and an inverted Ushaped plate connecting the mud ring to the watertubes,the tubes having reduced ends connected to the in-v verted U-shaped plate.

26. A fire-box comprising a door sheet, a flue sheet, a water chamber connected to the tops of the doon sheet and flue sheet, vertical water-tubes,,connected to the water chamber, located at the-sides of the ire-boX, a mud ring, and an inverted Ushaped plate connecting the mud ring to the water-tubes, the tubes having reduced ends connected to the inverted U-shaped plate.

27. A fire-box comprising a door sheet, a lue sheet, having an inclined lower end, a

tubes connected to the .water chamber at the sides of the tire-box, and extending forwardly beyond the lower end of the lue sheet.

28. A. tire-box comprisinga .door sheet, a ihie sheet, having an inclined lower end, a water chamber connected tothe tops of 'the door sheet and flue sheet, vertical watertnbes connected to the water chamber at the sides of the fire-box and extending t'orwardly beyond the lowerend ot 4the liuc sheet, a mnd ring and an inverted Ushaped plate connecting the mud ring, to the tubes and extendiingr forwardly be'yondthe lower end of the flue sheet.

29. A lire box con'lprising a crown sheet, a roof sheet, semi-cylindrical connecting sheets connecting the ysides thereof and a boiler, one end ot' the space between the root' sheet, crown sheet and the connecting,` sheets beineT open and in communication with the boiler. K y

30` A fire box vcomprising' a crown sheet, a root sb eet, semi-cylind rical connecting sheets connecting the sidesthereof, a boiler shell, and athl'ont sheet connecting` the fire boi; to the boiler shell.v f

ln testimony that I claim the foregoing l have hereunto set my hand.

. CHARLES DUCAS. lVitncsses:

Ania-ron l/Vnion'r, L. Bnoonnion.

A'water chamber connected to the tops of the door sheet and flue sheet and Vertical water- 

